Rack attachment



FIG. 1 is a top, front, and right side perspective view of a rackattachment showing a first embodiment of my new design;

FIG. 2 is a reduced left side elevational view thereof;

FIG. 3 is a reduced top plan view thereof;

FIG. 4 is a reduced bottom plan view thereof;

FIG. 5 is a reduced front elevational view thereof;

FIG. 6 is a top, front, and right side perspective view of a rackattachment showing a second embodiment of my new design;

FIG. 7 is a reduced left side elevational view thereof;

FIG. 8 is a reduced top plan view thereof;

FIG. 9 is a reduced bottom plan view thereof; and,

FIG. 10 is a reduced front elevational view thereof.

The ornamental design for a rack attachment, as shown and described.